The set consists of two modules, namely:
Two-axle semi-trailer UMIKOV NPK 35.46 – Module 1
Four-axle curtain trailer UMIKOV PN 4.56 – Module 2
Both vehicles have the same VIN and together they form a single unit registered under one registration plate. When transported empty, the two modules are connected via a coupling to form a single unit and behave like a six-axle semi-trailer.
When empty, the last two axles are transported and the first four axles are raised.